Element of a shoe sole



FIG. 1 is a left side elevational view of an element of a shoe sole showing my new design; and

FIG. 2 is a bottom plan view thereof.

The broken line showing of a shoe in FIGS. 1-2 and the area within are environmental only and form no part of the claimed design. 

The ornamental design for an element of a shoe sole, as shown and described. 